This link might also have some info you can use. It would be great for SketchUp to have an explicit way to export vector geometry from 3D for CNC purposes.
Is there any way to create a circle without segments in Sketchup or Sketchup Pro? I am designing metal parts and having them cut out on a laser cutter. Because Sketchup builds circles in segments the laser cutter also cuts them in segments and my part ends up looking quite messy. I know I can up the number of segments but I am wondering if there is a different way to do this. I don’t want to spend lot’s of money on Sketchup if I can’t cut out nice circles on a laser cutter.